PT90794A - METHOD FOR THE MANUFACTURE OF CRYSTALS OF BARIUM AND / OR STRONIUM TITANATE - Google Patents

METHOD FOR THE MANUFACTURE OF CRYSTALS OF BARIUM AND / OR STRONIUM TITANATE

Info

Publication number
PT90794A
PT90794A PT90794A PT9079489A PT90794A PT 90794 A PT90794 A PT 90794A PT 90794 A PT90794 A PT 90794A PT 9079489 A PT9079489 A PT 9079489A PT 90794 A PT90794 A PT 90794A
Authority
PT
Portugal
Prior art keywords
barium
oxide
alcoholate
crystals
strontium
Prior art date
Application number
PT90794A
Other languages
Portuguese (pt)
Other versions
PT90794B (en
Inventor
Henri Wautier
Luc Lerot
Original Assignee
Solvay
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solvay filed Critical Solvay
Publication of PT90794A publication Critical patent/PT90794A/en
Publication of PT90794B publication Critical patent/PT90794B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/003—Titanates
    • C01G23/006—Alkaline earth titanates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/02—Amorphous compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

An amorphous powder of titanium oxide and of barium and/or strontium oxide is precipitated by the hydrolysis of titanium alcoholate in the presence of barium oxide, hydroxide or alcoholate or strontium oxide, hydroxide or alcoholate and an acid organic compound containing more than 6 carbon atoms, and the amorphous powder is heated while being treated with a stream of gas containing water vapour, ammonia or CO2, to crystallize the barium or strontium titanate and distill off the acid organic compound. The barium or strontium titanate crystals are less than one micron in size and have an irregular, angular morphology.
PT90794A 1988-06-13 1989-06-09 METHOD FOR THE MANUFACTURE OF CRYSTALS OF BARIUM AND / OR STRONIUM TITANATE PT90794B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE8800674A BE1001780A4 (en) 1988-06-13 1988-06-13 Method for barium titanate crystal manufacturing and / or strontium and barium titanate crystals and / or strontium.

Publications (2)

Publication Number Publication Date
PT90794A true PT90794A (en) 1989-12-29
PT90794B PT90794B (en) 1994-10-31

Family

ID=3883464

Family Applications (1)

Application Number Title Priority Date Filing Date
PT90794A PT90794B (en) 1988-06-13 1989-06-09 METHOD FOR THE MANUFACTURE OF CRYSTALS OF BARIUM AND / OR STRONIUM TITANATE

Country Status (13)

Country Link
US (1) US5032375A (en)
EP (1) EP0346962B1 (en)
JP (1) JPH0280321A (en)
KR (1) KR900000296A (en)
CN (1) CN1039396A (en)
AT (1) ATE89241T1 (en)
AU (1) AU621375B2 (en)
BE (1) BE1001780A4 (en)
CA (1) CA1322099C (en)
DE (1) DE68906463D1 (en)
DK (1) DK285689A (en)
NO (1) NO892396L (en)
PT (1) PT90794B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1270828B (en) * 1993-09-03 1997-05-13 Chon Int Co Ltd PROCESS FOR THE SYNTHESIS OF CRYSTAL CERAMIC POWDERS OF PEROVSKITE COMPOUNDS
CN1063732C (en) * 1994-05-06 2001-03-28 清华大学 Method for making strontium titanate base grain-boundary layer capacitor material
US5814272A (en) * 1996-02-21 1998-09-29 Millipore Corporation Method for forming dendritic metal particles
WO1999059918A1 (en) * 1998-05-20 1999-11-25 Toho Titanium Co., Ltd. Barium titanate powder
CN1082491C (en) * 1998-06-12 2002-04-10 中国科学院青海盐湖研究所 Process for preparing nm-class strontium titanate
KR100630285B1 (en) * 1998-08-19 2006-09-29 쇼와 덴코 가부시키가이샤 Finely particulate titanium-containing substance, coating fluid containing the same, processes for producing these, and molded article having thin film comprising the substance
US6613303B1 (en) * 1998-10-13 2003-09-02 Eurotope Entwicklungsgesellschaft für Isotopentechnologien mbh Highly radioactive miniaturized ceremic strontium 90 radiation sources and method for the production thereof
MXPA02001885A (en) * 1999-08-23 2002-11-04 Cabot Corp Silicate based sintering aid and method.
JP3735686B2 (en) * 2001-10-30 2006-01-18 独立行政法人理化学研究所 Method for producing metal oxide ferroelectric particle crystal
KR100633723B1 (en) * 2005-08-04 2006-10-13 한화석유화학 주식회사 Process for preparing barium titanate
JP5119008B2 (en) * 2008-03-04 2013-01-16 日本化学工業株式会社 Method for producing perovskite-type barium titanate powder
CN103011807B (en) * 2012-12-17 2014-04-02 内蒙古自治区冶金研究院 Method for preparing strontium titanate powder
CN103613125B (en) * 2013-11-05 2015-10-28 清华大学 A kind of Ultrafine titanate nano powder and preparation method thereof
GB201405258D0 (en) * 2014-03-24 2014-05-07 Univ Birmingham Controlled atom source
CN113562743B (en) * 2021-08-19 2022-10-18 上海大学(浙江·嘉兴)新兴产业研究院 Ammonia gas concentration and recovery device, barium titanate production equipment and barium titanate production method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331659A (en) * 1964-03-31 1967-07-18 Malloy Frank Process for producing lead titanate powder
US3647364A (en) * 1970-01-06 1972-03-07 Us Air Force Process for producing high-purity submicron barium and strontium titanate powders
US4061583A (en) * 1974-03-13 1977-12-06 Murata Manufacturing Co., Ltd. Preparation of titanates
US4487755A (en) * 1982-07-01 1984-12-11 General Electric Company Preparation of large crystal sized barium and/or strontium titanate powder
JPS5945928A (en) * 1982-09-08 1984-03-15 Sony Corp Preparation of fine particle from strontium titanate
US4534956A (en) * 1983-07-08 1985-08-13 General Electric Company Molten salt synthesis of barium and/or strontium titanate powder
EP0141551B1 (en) * 1983-10-12 1988-02-03 Asahi Kasei Kogyo Kabushiki Kaisha Titanate powder and process for producing the same
JPS6183603A (en) * 1984-09-07 1986-04-28 Agency Of Ind Science & Technol Preparation of amorphous compound metal oxide
FR2571713B1 (en) * 1984-10-15 1990-03-23 Centre Nat Rech Scient PROCESS FOR THE PREPARATION OF TITANATES, ZIRCONATES AND STANNATES
FR2593166A1 (en) * 1986-01-20 1987-07-24 Solvay PROCESS FOR PRODUCING A METAL OXIDE POWDER FOR CERAMIC MATERIALS AND ZIRCONIA POWDER OBTAINED THEREBY
BE1001832A4 (en) * 1987-03-26 1990-03-20 Solvay Method for producing a powder mixed metal oxide and mixed metal oxide powder.
FR2617151B1 (en) * 1987-06-29 1990-10-12 Solvay PROCESS FOR THE MANUFACTURE OF MIXED METAL OXIDE POWDER, AND MIXED METAL OXIDE POWDERS

Also Published As

Publication number Publication date
NO892396L (en) 1989-12-14
EP0346962A1 (en) 1989-12-20
US5032375A (en) 1991-07-16
PT90794B (en) 1994-10-31
EP0346962B1 (en) 1993-05-12
BE1001780A4 (en) 1990-03-06
DE68906463D1 (en) 1993-06-17
DK285689A (en) 1989-12-14
KR900000296A (en) 1990-01-30
DK285689D0 (en) 1989-06-12
CN1039396A (en) 1990-02-07
AU621375B2 (en) 1992-03-12
ATE89241T1 (en) 1993-05-15
AU3633989A (en) 1989-12-14
NO892396D0 (en) 1989-06-12
JPH0280321A (en) 1990-03-20
CA1322099C (en) 1993-09-14

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Legal Events

Date Code Title Description
FG3A Patent granted, date of granting

Effective date: 19940419

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19951031